Installed HDP 2.0 Stack but Tez user created

Installed HDP 2.0 stack with Ambari 1.5.0 but Tez user got created, even
though Tez is not part of HDP 2.0.

postgres:x:26:26:PostgreSQL Server:/var/lib/pgsql:/bin/bash
ambari-qa:x:1001:503::/home/ambari-qa:/bin/bash
tez:x:503:503::/home/tez:/bin/bash
hbase:x:1002:503::/home/hbase:/bin/bash
nagios:x:1003:504::/home/nagios:/bin/bash
oozie:x:1004:503::/home/oozie:/bin/bash
hcat:x:1005:503::/home/hcat:/bin/bash

281adc06ae7343a0b4ebe386baed18a555e35b35

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